<!DOCTYPE html>
<head>
    <title>CodeMirror Test</title>
</head>
<body>
    <div id="editor"></div>
    <div>
        <button name="refresh">Refresh</button>
    </div>

    <div id="tree" style="margin-top: 10px;";></div>
   
    <script type="module" src="./index.js"></script>
</body>